Question

A high school coach wants to buy new shirts for the 25 members of the track team. The coach must spend less than $300 on the shirts and needs to figure out how much he can spend per shirt, s.

Which of the following must be true about the inequality and the resulting graph? Select three options.
The inequality should be written as 25 s less-than 300.
The inequality should be written as 25 s greater-than 300.
The circle is open.
The circle is closed.
The arrow points left.

Answer 1

True: 25s less-than 300; the circle is open; the arrow points left.

Reason: 25s < 300. Dividing by 25 (positive) gives s < 12, so the graph uses an open circle at 12 and an arrow pointing left (values less than 12).